Phase measurement accuracy in digital holographic microscopy using a wavelength-stabilized laser diode

Yueh Long Lee, Yu Chih Lin, Han Yen Tu, Chau Jern Cheng

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    This work describes the influence of coherent illumination on phase measurement accuracy in digital holographic microscopy (DHM). To improve net phase accuracy in a DHM system, the phase referencing and temporal averaging techniques are applied simultaneously to suppress the phase noises caused by the laser source and image sensor. A comparison between a laser diode operated in single- and multi-modes is given to demonstrate the coherence effect on the fringe visibility and the reconstructed phase accuracy of digital holograms. Axial sub-nanometer accuracy in DHM with the fewest successive hologram recordings is performed using a wavelength-stabilized laser diode in single-mode operation.

    Original languageEnglish
    Article number025403
    JournalJournal of Optics (United Kingdom)
    Volume15
    Issue number2
    DOIs
    Publication statusPublished - 2013 Feb

    Keywords

    • digital holography
    • laser diodes
    • microscopy
    • phase measurement

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

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